#!/bin/bash
set -e -x

source $(dirname $0)/version.sh

cd $(dirname $0)/..
PKG="github.com/rancher/k3s"
PKG_CONTAINERD="github.com/containerd/containerd"
PKG_RANCHER_CONTAINERD="github.com/rancher/containerd"
PKG_CRICTL="github.com/kubernetes-sigs/cri-tools"

VERSIONFLAGS="
    -X $PKG/pkg/version.Version=$VERSION
    -X $PKG/pkg/version.GitCommit=${COMMIT:0:8}
    -X $PKG/vendor/$PKG_CONTAINERD/version.Version=$VERSION_CONTAINERD
    -X $PKG/vendor/$PKG_CONTAINERD/version.Package=$PKG_RANCHER_CONTAINERD
    -X $PKG/vendor/$PKG_CRICTL/pkg/version.Version=$VERSION_CRICTL"
LDFLAGS="
    -w -s"
STATIC="
    -extldflags '-static'
"
STATIC_SQLITE="
    -extldflags '-static -lm -ldl -lz -lpthread'
"
TAGS="ctrd apparmor seccomp no_btrfs netgo osusergo providerless"

if [ "$STATIC_BUILD" != "true" ]; then
    STATIC="
"
    STATIC_SQLITE="
"
else
    TAGS="static_build libsqlite3 $TAGS"
fi

mkdir -p bin

if [ -z "$GOARM" ] && [ "arm" = "$(go env GOARCH)" ]; then
    GOARM=7
fi

rm -f \
    bin/k3s-agent \
    bin/hyperkube \
    bin/containerd \
    bin/cni \
    bin/runc \
    bin/containerd-shim \
    bin/containerd-shim-runc-v1 \
    bin/k3s-server \
    bin/kubectl \
    bin/crictl \
    bin/ctr

cleanup() {
    exit_status=$?
    rm -rf $TMPDIR
    exit ${exit_status}
}

INSTALLBIN=$(pwd)/bin
(
    echo Building cni
    TMPDIR=$(mktemp -d)
    trap cleanup EXIT
    WORKDIR=$TMPDIR/src/github.com/containernetworking/plugins
    git clone -b $VERSION_CNIPLUGINS https://github.com/rancher/plugins.git $WORKDIR
    cd $WORKDIR
    GOPATH=$TMPDIR CGO_ENABLED=0 go build -tags "$TAGS" -ldflags "$LDFLAGS $STATIC" -o $INSTALLBIN/cni
)
# echo Building agent
# CGO_ENABLED=1 go build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC" -o bin/k3s-agent ./cmd/agent/main.go
echo Building server
CGO_ENABLED=1 go build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQLITE" -o bin/containerd ./cmd/server/main.go
ln -s containerd ./bin/k3s-agent
ln -s containerd ./bin/k3s-server
ln -s containerd ./bin/kubectl
ln -s containerd ./bin/crictl
ln -s containerd ./bin/ctr
echo Building hyperkube
CGO_ENABLED=1 go build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQLITE" -o bin/hyperkube ./vendor/k8s.io/kubernetes/cmd/hyperkube/
#echo Building ctr
#CGO_ENABLED=1 go build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQLITE" -o bin/ctr ./cmd/ctr/main.go
# echo Building containerd
# CGO_ENABLED=0 go build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC" -o bin/containerd ./cmd/containerd/
echo Building runc
make EXTRA_LDFLAGS="-w -s" BUILDTAGS="apparmor seccomp" -C ./vendor/github.com/opencontainers/runc static
cp -f ./vendor/github.com/opencontainers/runc/runc ./bin/runc
echo Building containerd-shim-runc-v1
make -C ./vendor/github.com/containerd/containerd bin/containerd-shim-runc-v1
cp -f ./vendor/github.com/containerd/containerd/bin/containerd-shim-runc-v1 ./bin/containerd-shim-runc-v1
